<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Promise对象</title>
  </head>
  <body>
    <script>
      const p = new Promise((resolve, reject) => {
        resolve('成功');
        // reject('失败');
      });

      p.then(
        res => {
          console.log('测试1--', res);
        },
        err => {
          console.log('测试2--', err);
        }
      );
    </script>
  </body>
</html>
